magneto1998 magneto1998

26-12-2016
Mathematics

Answered

can someone give examples of multiplying Factors here is one (-x-4)(x+4)

Verified Answer :

26-12-2016

You use FOIL

First
Outer
Inner
Last

(-x - 4)(x + 4)

The first terms for both are -x and x

-x x = -x^2

Outer are -x and 4

-x 4 = -4x

Inner are -4 and x

-4 x = -4x

Last are -4 and 4

-4 4 = -16

Combine:

-x^2 - 4x - 4x - 16

-x^2 - 8x - 16

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